[Q] GT 540 MMI issue

I have updated my 2.1 to 2.3.4 swift v2 m6 based on cyangenmod 7.1.0 RCO.

Love the ROM

Issues, I paid for the optus unlock code and have to put in 2945#*520# to put in the provided code. The error comes up Connection problem or invalid MMI code.

I have spent a couple of days looking at different forums and solutions, tried extra pauses etc and still the same issues. One suggested going back to original ROM and trying that, however another issue I have is the phone will not boot back into recovery or bootloader, just turn off and stays that way. I have held different buttons as stated in different threads and even hopped on one foot.

I am happy with this ROM just want to get to the unlock menu, any ideas that I might have missed??

i think it works on 2.1 too as long as the rom has the hidden menu. so best is to try boot into fastboot via power and camera button. (try holding it very hard and long till the black screen appears) and flash any 2.1 rom

Tried the power camera buttons never worked. Is there a fastboot 2.1 file that was like the 2.3 file that you just double clicked on and it installed the new android? So I can just click on the file 2.1 and it will load up?

Just a warning, if you get one of these phones network locked, unlock it before upgrading the android.

I have spent a week on this trying to downgrade to 2.1 so I can get to the unlock menu.

I have followed directions from many sites and flashed using kdz, have put recovery on using command prompt, use solution to get the phone to show up menus. Where I fall down is I can not get past the selection where the forums tell me to hold power/camera or other buttons and a menu will come up and give options to select install from sdcard. No matter what I do I can not get to that section??

This is really frustrating me, I have tried so many solution.

However, each time I fail and the phone is black, I just load the recovery with kdz and then click on Android234GT540_06-06-11_eng and this last file auto installs 2.3.4, wonderful, so is there a file like this for 2.1?? if so I pretty sure I can then downgrade then get to the unlock menu.

You are the man, thank you sooooooo much, two weeks on getting the downgrade working and this works a treat.

After downgrade I was able to get into the unlock menu and was able to enter the unlock code, I am so happy for your post.

Ernie

Quote:

Originally Posted by Dr.Alani

It does not cause a problem to downgrade to 2.1 without fastboot, I have done that several times. All you have to focus on is the following:
after doing "fastboot -w" turn the phone off. And DO NOT TURN IT ON AGAIN. Remove the battery, sim and SD. Hold the camera + power and then plug the phone to usb it will run into download mode. Run the KDZ updater with CS Emergency mode and flash whatever 20A rom you can have. Before the update ends, it will reboot and ask you to insert the battery. Do not unplug the phone until the KDZ updater gives you the ======= finished ====== message.

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